Megachile deflexa Cresson, 1878:125, ♂. Holotype ♂, Kansas (leg. Ridings); Mitchell, 1936Mitchell, T.B. 1936. A revision of the genus Megachile in the Nearctic Region. Part V. Taxonomy of subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62 (4):323-382.:335, Type ♂ (A.N.S.P., no. 2441); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:17, Type ♂ (ANSP, 2441). - Dalla Torre, 1896Dalla Torre, C.G. 1896. Catalogus Hymenopterorum hucusque descriptorum systematicus et synonymicus, X. Apidae (Anthophila). Sumptibus Guilelmi Engelmann, 1-643. (distribution); Mitchell, 1936Mitchell, T.B. 1936. A revision of the genus Megachile in the Nearctic Region. Part V. Taxonomy of subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62 (4):323-382. (distribution); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557. (distribution); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209. (distribution); Pascarella, 2006Pascarella, J.B. 2006. The bees of Florida. . (distribution); Owens et al., 2018Owens, B.E., L. Allain, E.C. van Gorder, J.L. Bossart & C.E. Carlton 2018. The bees (Hymenoptera: Apoidea) of Louisiana: An updated, annotated checklist. Proceedings of the Entomological Society of Washington 120 (2):272-307. (distribution).
Megachile megagyna Cockerell, 1909:394, ♀. ♀, Lee County, Texas, June, 1908 (leg. Birkmann). - Cockerell, 1911Cockerell, T.D.A. 1911. Bees in the collection of the United States National Museum. 2. Proceedings of the United States National Museum 40 (1818):241-264. (distribution); Cockerell, 1915Cockerell, T.D.A. 1915. Descriptions and records of bees. - LXVII. The Annals and Magazine of Natural History ser. 8: v. 15:529-537. (distribution); Mitchell, 1936Mitchell, T.B. 1936. A revision of the genus Megachile in the Nearctic Region. Part V. Taxonomy of subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62 (4):323-382.:332 ( listed as synonym of Megachile deflexa Cresson, 1878); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:146 ( listed as synonym of Megachile deflexa Cresson, 1878); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:2063 ( listed as synonym of Megachile deflexa Cresson, 1878); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution), 17 ( listed as synonym of Megachile deflexa Cresson, 1878).
Megachile indianorum Cockerell, 1913:533, ♂. Holotype ♂, Andmore, Indian Territory, July 11 (U.S. National Museum, leg. C.R. Jones). - Mitchell, 1936Mitchell, T.B. 1936. A revision of the genus Megachile in the Nearctic Region. Part V. Taxonomy of subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62 (4):323-382.:332 ( listed as synonym of Megachile deflexa Cresson, 1878); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:146 ( listed as synonym of Megachile deflexa Cresson, 1878); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:2063 ( listed as synonym of Megachile deflexa Cresson, 1878); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:17 ( listed as synonym of Megachile deflexa Cresson, 1878).
Megachile coreopsana Mitchell, 1934:319, ♂. Holotype ♂, Marston, North Carolina, July 4, 1928 (colln. Mitchell, leg. Mitchell); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43.:17, Type ♂ (NCSU). - Mitchell, 1936Mitchell, T.B. 1936. A revision of the genus Megachile in the Nearctic Region. Part V. Taxonomy of subgenus Xeromegachile (Hymenoptera: Megachilidae). Transactions of the American Entomological Society 62 (4):323-382.:332 ( listed as synonym of Megachile deflexa Cresson, 1878); Mitchell, 1962Mitchell, T.B. 1962. Bees of the Eastern United States. Volume II. Technical bulletin (North Carolina Agricultural Experiment Station) 152:1-557.:146 ( listed as synonym of Megachile deflexa Cresson, 1878); Krombein et al., 1979Krombein, K.V., P.D. Hurd, D.R. Smith & B.D. Burks 1979. Catalog of Hymenoptera in America North of Mexico. Volume 2. Apocrita (Aculeata). Smithsonian Institution Press, Washington D.C. 1199-2209.:2063 ( listed as synonym of Megachile deflexa Cresson, 1878); Raw, 2002Raw, A. 2002. New combinations and synonymies of leafcutter and mason bees of the Americas (Megachile, Hymenoptera, Megachilidae). Zootaxa 71:1-43. (distribution), 17 ( listed as synonym of Megachile deflexa Cresson, 1878).